Well funny enough for one of my series I Can Be A Princess was inspired by Adventure Time, but also because a friend of mine would often call me a Princess...then joke I could never be one. So I showed him!...r-right..?
Another series I worked with Life can Succubus was inspired by the fact I am asexual and a bit afraid of any physical closeness with people which was kind of my humoring outlet on that strange Alienation.
Machine was a project I was just about manic in creating. It was created after a project I had been on working on that ended with " I feel Mechanical, sterilized and unnecessary. " Dark indeed but with purpose.
Lastly, A Bat Followed Me home had been inspired by my desire to have a series that could be dis-alarming and deceptive at the same time. Oh also bats. Lots of bats.
I find your series humoring. Love the living hell out of Adventure time.